What does the magnetosphere protect the earth from?
Solar winds (Harmful rays from the sun)
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5
What happens as an object’s height increases? The potential energy ______________.
increases
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15
Three rock climbers are climbing the side of a mountain. One is 100m above the ground. Another is 200 m above the ground and the third is 300 m above the ground. Which has more energy? Why? (Assume they're the same mass.)
300 m because this rock climber has more height
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5
Same poles of a magnet attract or repel?
Repel
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5
True or false: a compass uses magnets.
true
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5
In order to do work on an object, the force you exert must be in the _______ direction as the object's motion.
same
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10
Do electrons have a positive or negative charge?
Negative
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lifesaver
Give 25 points!
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magnet
Take 15 points!
Okay!
fairy
Take points!
5
10
15
20
25
thief
Give points!
5
10
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25
5
What is an example of chemical potential energy?
battery, food, burning fuel such as gasoline
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monster
Reset all scores!
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star
Double points!
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shark
Other team loses 15 points!
Okay!
banana
Go to last place!
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5
A bicycle on top of a hill, a book held over your head, and a stretched spring all have______________.
Potential Energy
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10
When all of the __________ in a material are arranged in the same direction, the material become a permanent magnet.
magnetic domains
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seesaw
Swap points!
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rocket
Go to first place!
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fairy
Take points!
5
10
15
20
25
banana
Go to last place!
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5
True or False: a force applied to an object ALWAYS changes the object it acts on.
